Crucially , the brane floats in a higher dimensional space-time called the bulk , which we are normally completely oblivious to .

最重要的是，这个膜漂浮在称为主体（bulk）的更高维数的时空上，这个主体的时空通常我们还完全没有注意到。

In pakvasa 's model , the muon neutrinos produced at cern could have transformed to sterile neutrinos mid-flight , made a short hop through the bulk , and then switched back to muon before reappearing on the brane .

在pakvasa的模型中，欧洲核子研究中心所产生的μ介子中微子可能转化为飞行中的惰性中微子，通过在主体中的短暂的一跳，然后它在膜上重现之前，切换回到μ介子。